Hi there @newtoncr I’m a bit late to this post, but having recently acquired an Etna Lambda SL (which is fitted to a Linn Ekos SE tonearm), I have found that the cartridge sounds best at 1.75g – a little heavier than the recommended ideal 1.72g.
The instructions that came with the cartridge state:
‘Note that Etna SL (Lambda) features a new high-performance asymmetrical damping system, designed to make the signal coils precisely parallel to the front and rear magnets during play. The angle between signal coils and magnets is affected by tracking force, and we strongly advise not to deviate beyond our 1.68-1.78g guidelines. Setting tracking force so that the cantilever is exactly perpendicular to the (yellow) front magnet carrier during play should result in the largest dynamic range and best sound.’
I don’t know whether/how much the suspension will soften with break-in, but at 1.75g the cantilever is still not quite perpendicular to the front magnet during play (I estimate more like 95 degrees), which indicates scope for further increasing VTF.